Abstract: A composition of matter and an interlayer formed of such composition for a laminated glazing comprising polyvinyl butyral resin plasticized with a mixed adipate or a mixture of pure and mixed adipates made from: (a) at least one C.sub.4 to C.sub.9, preferably C.sub.6, alkyl alcohol and (b) at least one cyclo (C.sub.4 to C.sub.10), preferably C.sub.6, alcohol wherein the proportions of (a) and (b) in parts by weight per 100 parts (a) and (b) are: (a) 10-90, preferably 30-80 and (b) 90-10, preferably 70-20.

Abstract: A composition of matter and an interlayer formed of such composition for a laminated glazing comprising polyvinyl butyral resin plasticized with a mixed adipate or a mixture of pure and mixed adipates made from: (a) at least one C.sub.4 to C.sub.9, preferably C.sub.6, alkyl alcohol and (b) at least one cyclo (C.sub.4 to C.sub.10), preferably C.sub.6, alcohol wherein the proportions of (a) and (b) in parts by weight per 100 parts of (a) and (b) are: (a) 10-90, preferably 30-80 and (b) 90-10, preferably 70-20.

Abstract: Plasticized polyvinyl butyral sheet containing a modification-producing amount of ionomeric groups which are preferably the metal sulfonate salt of an aldehyde chemically combined with oxygen atoms of adjacent precursor vinyl alcohol groups.

Abstract: A process for increasing both resistance to blocking and flow during laminating of plasticized polyvinyl butyral sheet which comprises incorporating into the formulation of the sheet a block-reducing and flow-promoting amount, preferably up to about 10 mole %, of ionomeric groups chemically bound to oxygen atoms of adjacent precursor vinyl alcohol groups.

Abstract: An optical element for a motor vehicle windshield comprises, in combination, an interference filter having one or more light-reflecting metal layers and one or more reflection-suppressing layers for coacting with the one or more metal layers to minimize reflection and enhance transmission in the visible region, a gradient band continuation of the interference filter above the direct line of forward vision through a windshield when disposed in a motor vehicle for reflective rejection of infra-red solar energy, such band including a light-reflecting metal layer gradually increasing in thickness toward a lateral edge of the band, a transparent substrate supporting such filter and gradient band and plural bus bars substantially parallel to the lateral edge of the gradient band in electrical contact with the metal layers of the interference filter and the gradient band continuation.

Abstract: A laminated window construction includes a solar control film formed by a flexible plastic substrate such as a PET sheet having on one surface a multilayer solar coating. This multilayer solor coating includes at least one thin layer of metal and at least one adjacent adherent layer of a dielectric material. An energy absorbing safety film of the type normally used in shatterproof glass laminates (e.g., plasticized PVB) is bonded to at least one side, and preferably both sides, of the solar control film to form a composite solar/safety film. This composite solar/safety film is specially designed to contribute, after incorporation into a glass laminate, no more than about two percent of visible reflection (based on total incident visible radiation) which has the effect of substantially masking the visible effects of wrinkles in the solar control film substrate (i.e., the wrinkles are made less visible).

Abstract: In a process for preparation of polyvinyl butyral sheet by blending polyvinyl butyral with plasticizer and extruding the blend to form the sheet, the step in combination therewith of including in the blend a modification-promoting amount, preferably up to about 10 mole % based on polyvinyl butyral, of ionomeric groups chemically bound to polyvinyl butyral forming the sheet.

Abstract: A method of producing ionomeric polyvinyl butyral by the steps of (a) condensing polyvinyl alcohol with an aldehyde containing an acid group in the presence of a catalyst; (b) acetalizing the reaction product of step (a) in situ with butyraldehyde to form polyvinyl butyral and (c) neutralizing the reaction product of step (b) to form ionomeric polyvinyl butyral.

Abstract: A polyblend comprising first and second polyvinyl butyral components admixed with plasticizer, one of the components present in minor amount (preferably 10 to 30 weight %) containing chemically bound ionomeric groups which are preferably the metal salt of an aldehyde.

Abstract: A polymeric laminate for use with a glass layer in a laminated bilayer or anti-lacerative shield application comprises a first layer of moisture tolerant plasticized polyvinyl butyral containing (a) adhesion control agent(s) and (b) residual hydroxyl content which optimize glass adhesion and optical performance over a range of moisture contents in the first layer likely to be encountered in use, i.e. 0.2 to 0.5 weight % and 2 to 2.8 weight %, such first layer being in face to face contact with a second layer of a clear polymer film or coating having a combination of performance properties desirable for these applications. Preferred second layers are biaxially stretched polyester and thermoset aliphatic polyurethane.

Abstract: Polyvinyl butyral (PVB) resin lightly cross-linked through intermolecular linkages developed through increase PVB molecular weight and the modulus of a plasticized sheet formed therefrom intended for use in laminated safety glass assemblies.

Abstract: A polymeric laminate of a sheet containing plasticized polyvinyl butyral chemically linked by urethane groups to a polyurethane layer which is preferably thermoset.

Abstract: An optical element for a motor vehicle windshield comprises, in combination, an interference filter having one or more light-reflecting metal layers and one or more reflection-suppressing layers for coacting with the one or more metal layers to minimize reflection and enhance transmission in the visible region, a gradient band continuation of the interference filter above the direct line of forward vision through a windshield when disposed in a motor vehicle for reflective rejection of solar energy, such band including a light-reflecting metal layer gradually increasing in thickness toward a lateral edge of the band and an anti-glare backing behind the gradient band for suppressing luminous reflection from within the motor vehicle when the optical element is disposed in the windshield.

Abstract: A transparent polymeric laminate of plasticized polyvinyl butyral sheet chemically linked by urethane groups to a thermoset polyurethane layer formed as the reaction product of a cross-linkable mixture containing diisocyanate and polyether polyol containing primary or secondary hydroxyl groups and having a molecular weight between about 250 to about 8000.

Abstract: Thermoplastic polyblends having weatherability and impact strength are formed by blending a first graft copolymer containing a conjugated diene rubber substrate having a weight average particle size between about 0.6 and about 10 microns with a second graft copolymer containing an EPDM-type rubber substrate having a weight average particle size between about 0.05 and about 1 micron or an alkyl acylate rubber substrate having a weight average particle size between about 0.05 and about 0.5 micron. The superstrate of the two graft copolymers comprises a monovinylidene aromatic hydrocarbon and an unsaturated nitrile.

Abstract: Polyvinyl butyral (PVB) resin lightly cross-linked through stable intermolecular linkages developed, for example, through use of a dialdehyde or trialdehyde, to selectively increase PVB molecular weight and the modulus of a plasticized sheet formed therefrom intended for use in laminated safety glass assemblies.

Abstract: A method of forming polymers containing .alpha.-methylstyrene and acrylonitrile by polymerizing, preferably continuously, under off-azeotrope conditions to vastly improve rate without substantially changing the content of .alpha.-methylstyrene in the polymer being formed from that obtained under azeotrope conditions.

Abstract: Polyvinyl butyral (PVB) resin lightly cross-linked through stable intermolecular linkages developed, for example, through use of a dialdehyde or trialdehyde, to selectively increase PVB molecular weight and the modulus of a plasticized sheet formed therefrom intended for use in laminated safety glass assemblies.

Abstract: A composition capable of providing low gloss in a part molded therefrom consisting essentially of 20 to 50% by weight of a graft copolymer of ethylenically unsaturated monomers grafted unto a rubber with a rubber content of 5 to 80% by weight based on the weight of Component A; 80 to 50% by weight of one or more thermoplastic, rubber-free copolymers containing: (i) 1 to 25% by weight based on the total weight of Component (B) of an unsaturated dicarboxylic acid anhydride monomer and (ii) 0.5 to 2% by weight based on the total weight of Component (B) of an ethylenically unsaturated copolymerized epoxide compound.

Abstract: A transparent, laminated window, particularly for use as a vehicle windshield, has improved deicing capability and high luminous transmission and near IR rejection, comprises an optical element having a low sheet resistivity of less than about 6 ohms per square and less than about 11% normal incidence reflection of 400-700 nm wavelength light, such element containing at least two transparent metal layers less than 150A thick which are electrically conductively associated with bus bar(s) and separated by one or more dielectric layers.